Describe the bug
Hello :=)

Simple and easy = it is a crash on start up, but not all the time.
I restarted the server often and only now, after creating new Advanced Rocketry configs (because the update on the 2.0.0 version) I had this crash 1 time.
After restarting again, all was fine.

To Reproduce
Start a 201 mods server ... somehow ... for sure not easy to reproduce.

Expected behavior
Clean boot

Crash Report
https://pastebin.com/8tyM2G5S

Versions (please complete the following information):

• Minecraft: 1.12.2
• Forge: 14.23.5.2855
• Cucumber: 1.1.3
• Mystical Agriculture: 1.7.5
• Mystical Agradditions: 1.3.2

Ps: I know, it is 1.12.2, but pleeeeaaaaasse don't give up this version, if this is an easy fix. ❤️

I'm going to close this since 1.12.2 is EOL. The error in that crash log would not have been caused by anything on my end anyways.